Ballpoint pen



FIG. 1 is a front elevational view of the ballpoint pen showing our design, the back elevational view thereof being a mirror image of the front elevational view thereof;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a perspective view thereof;

FIG. 7 is a cross-sectional view thereof, taken along section lines 7—7 in FIG. 1; and,

FIG. 8 is a cross-sectional view thereof, taken along section lines 8—8 in FIG. 1.

The stippling shown on the ballpoint pen, represents a surface texture. 

We claim the ornamental design for a ballpoint pen, as shown and described. 